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In "LARP and the Real Girl," the Winchesters reconnect with nerdy tech genius Charlie (guest star Felicia Day) who is the Queen of Moondoor in a live-action world where two LARPers have been killed.

In this clip from the episode, Sam and Dean reluctantly show up as the nerds take their craft very seriously (unless their fake teeth fall out). It also seems that a group of people devoted to ensuring every little detail of their fictional world is as real as possible are quite perceptive when it comes to IDs.

Tune in Wednesday, January 23 to see Dean play squire to the Queen of Moondoor on Supernatural.